Tannins are natural organic matter that can result from natureâs fermentation process as water passes through the ground in peaty areas or through levels of decaying vegetation. Tannins are typical found in shallow wells, in swampy or marshy areas as well as coastal areas.
Jewel yams are ovate and cylindric in shape, tapering at the ends. They have a rough semi thick skin with a rose hued pale orange color. The flesh is brilliant orange, moist and starchy. The flesh's vibrant color increases when cooked.Its flavor is sweet and its starchy textures allows it to absorb accompanying ingredients' flavors. The Jewel yam is a high source for beta carotene and yields a substantial amount of carbohydrates per single yam.True yams are native to Asia and Africa and are one of the most important food crops in tropical and subtropical regions.he flesh is brilliant orange, moist and starchy. The flesh's vibrant color increases when cooked. Its flavor is sweet and its starchy textures allows it to absorb accompanying ingredients' flavors. The Jewel yam is a high source for beta carotene and yields a substantial amount of carbohydrates per single yam.
Yam is the common name for some plant species in the genus Dioscorea (family Dioscoreaceae) that form edible tubers. These are perennial herbaceous vines cultivated for the consumption of their starchy tubers in Africa, Asia, Latin America, the Caribbean and Oceania.here are many cultivars of yam. Although some varieties of sweet potato (Ipomoea batatas) are also called yam in parts of the United States and Canada, sweet potato is not part of the family Dioscoreaceae but belongs in the unrelated morning glory family Convolvulaceae.